gpio: mcp23s08: request a shared interrupt

Request a shared interrupt when requesting a mcp23s08 GPIO interrupt.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 1ac7de85da8b..6589438dad57 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -485,7 +485,8 @@ static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
                 return -ENODEV;
 
         err = devm_request_threaded_irq(chip->dev, mcp->irq, NULL, mcp23s08_irq,
-                                        IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+                                        IRQF_TRIGGER_LOW | IRQF_ONESHOT |
+                                        IRQF_SHARED,
                                         dev_name(chip->dev), mcp);
         if (err != 0) {
                 dev_err(chip->dev, "unable to request IRQ#%d: %d\n",